I can't believe there is no "The iPad Air bends when I shove it down my pants and go breakdancing" option.
As for Mossberg, I think he's pissed there was no split screen multitasking. I think that will come in iOS 9. Sure this thing is incredibly fast, but someone like him doesn't give a crap. He wants more innovation in letting the tablet replace your laptop. Being faster is only a part of that equation. I don't blame him as I'd like to see Apple do more to bring the iPad into the realm of serious productivity.
The thing is that this thing benchmarks similar to a 2011 MacBook Air. Now we just need the software to catch up. 2GB of RAM is probably just enough to do some legit image editing. Just don't expect to work with multiple images at a time. We can also now have high-resolution drawing canvases. Just don't expect to be able to use a ton of layers. It's still somewhat restricted compared to something like the MBA which ships with 4GB of RAM standard and has disk caching to a fast SSD, but it will help a lot in everyday tasks like Safari which was honestly my biggest complaint. The iPad is catching up much faster to the MacBooks than the MacBooks can advance on their own, which is pretty crazy to think about. I'm really starting to believe that these low-powered ARM chips with a scalable number of cores could end up making their way into the Mac line. Pop a hex-core A9X into a MBA and suddenly the multicore is benching similar to the first quad-core i7s put in the 2011 15" MacBook Pro, which is way faster than any current MBA, and probably with a lower TDP and battery draw. I really wonder if that fanless MBA with retina display rumor is true, but uses an ARM chip.